Question

Given two independent random samples with the following results: n1=11 x‾1=131 s1=30 n2=13 x‾2=162 s2=33 Use this data to find the 95% confidence interval for the true difference between the population means. Assume that the population variances are not equal and that the two populations are normally distributed.

Step 1 of 3: Find the point estimate that should be used in constructing the confidence interval.

Step 2 of 3: Find the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places.

Step 3 of 3: Construct the 95% confidence interval. Round your answers to the nearest whole number.

Answer #1

Given two independent random samples with the following
results:
n1=11
x‾1=128
s1=23
n2=13
x‾2=110
s2=32
Use this data to find the 95%95% confidence interval for the
true difference between the population means. Assume that the
population variances are equal and that the two populations are
normally distributed.
Copy Data
Step 1 of 3:
Find the critical value that should be used in constructing the
confidence interval. Round your answer to three decimal places.
Step 2 of 3:
Find the standard...

Given two independent random samples with the following
results:
n1=7
x‾1=129
s1=14
n2=14
x‾2=159
s2=24
Use this data to find the 95% confidence interval for the true
difference between the population means. Assume that the population
variances are not equal and that the two populations are normally
distributed.
Step 1 of 3:
Find the point estimate that should be used in constructing the
confidence interval.
Step 2 of 3:
Find the margin of error to be used in constructing the...

Given two independent
random samples with the following results:
n1=9
n2=13
x‾1=153 x‾2=113
s1=30
s2=26
Use this data to find
the 95% confidence interval for the true difference between the
population means. Assume that the population variances are not
equal and that the two populations are normally distributed.
Copy Data
Step 2 of 3 :
Find the margin of
error to be used in constructing the confidence interval. Round
your answer to six decimal places.

Given two independent random samples with the following
results:
n1
=
11
n2
=
13
xbar1
=
162
xbar^2
=
130
s1
=
31
s2
=
30
Use this data to find the 95% confidence interval for the true
difference between the population means. Assume that the population
variances are equal and that the two populations are normally
distributed.
Copy Data
Step 1 of 3: Find the critical value that should be used in
constructing the confidence interval. Round...

Given two independent random samples with the following
results:
n1=5 n2=8
x‾1=198 x‾2=182
s1=26 s2=23
Use this data to find the 99% confidence interval for the true
difference between the population means. Assume that the population
variances are not equal and that the two populations are normally
distributed.
Copy Data
Step 1 of 3:
Find the point estimate that should be used in constructing the
confidence interval.
Step 2 of 3:
Find the margin of error to be used in...

Given two independent random samples with the following
results:
n1=16 x‾1=170 s1=23 n2=9 x‾2=152 s2=21
Use this data to find the 80% confidence interval for the true
difference between the population means. Assume that the population
variances are equal and that the two populations are normally
distributed.
Step 1 of 3:
Find the point estimate that should be used in constructing the
confidence interval.
Step 2 of 3:
Find the margin of error to be used in constructing the
confidence...

Given two independent random samples with the following
results:
n1=15
x‾1=109
s1=11
n2=10
x‾2=74
s2=30
Use this data to find the 99%
confidence interval for the true difference between the
population means. Assume that the population variances are not
equal and that the two populations are normally distributed.
Step 1 of 3 : Find the critical value that should be
used in constructing the confidence interval. Round your answer to
three decimal places. If possible, please show work or show...

Given two independent random samples with the following
results:
n1=8
x‾1=114
s1=22
n2=16
x‾2=88
s2=27
Use this data to find the 80% confidence interval for the true
difference between the population means. Assume that the population
variances are not equal and that the two populations are normally
distributed.
Step 1 of 3:
Find the critical value that should be used in constructing the
confidence interval. Round your answer to three decimal places.
Step 2 of 3:
Find the standard error...

Given two independent random samples with the following
results:
n1=17
x‾1=185
s1=22
n2=12
x‾2=150
s2=15
Use this data to find the 98%
confidence interval for the true difference between the
population means. Assume that the population variances are not
equal and that the two populations are normally distributed.
Step 1 of 3 : Find the critical value that should be
used in constructing the confidence interval. Round your answer to
three decimal places.

Given two independent random samples with the following
results:
n1=11
x‾1=133
s1=20
n2=12
x‾2=151
s2=22
Use this data to find the 90% confidence interval for the true
difference between the population means. Assume that the population
variances are not equal and that the two populations are normally
distributed.
Step 1 of 3 :
Find the critical value that should be used in
constructing the confidence interval. Round your answer to three
decimal places. Please show work or show TI 83...

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